Kogoro and Conan find themselves in Yokohama after being summoned by an enigmatic individual. However, this turns out to be a trap set by the same person. Ran and the Detective Boys are taken hostage, with bombs strapped to them that will detonate if the man’s demands aren’t met within 12 hours. The situation is further complicated by the fact that the man is aware of Conan’s real identity as Kudo Shinichi. Joining the fray are Hattori Heiji, the High School Detective from the West, and Kaito Kid. Can they unravel the mystery in time to rescue Ran and the others? And who exactly is this mysterious client?